33140865 has 16 divisors (see below), whose sum is σ = 53264448. Its totient is φ = 17595456.

The previous prime is 33140857. The next prime is 33140903. The reversal of 33140865 is 56804133.

It is not a de Polignac number, because 33140865 - 2³ = 33140857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1462 + ... + 8271.

It is an arithmetic number, because the mean of its divisors is an integer number (3329028).

Almost surely, 2^33140865 is an apocalyptic number.

It is an amenable number.

33140865 is a deficient number, since it is larger than the sum of its proper divisors (20123583).

33140865 is a wasteful number, since it uses less digits than its factorization.

33140865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9968.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 33140865 is about 5756.8103147490. The cubic root of 33140865 is about 321.2091783989.

Adding to 33140865 its reverse (56804133), we get a palindrome (89944998).

The spelling of 33140865 in words is "thirty-three million, one hundred forty thousand, eight hundred sixty-five".